Pressure Welding 90
2005
of the two joining members where, by the increased interface resistance, the highest heat
generation is obtained. After the welding temperature - which is lower than the melting
temperature of the weld
metal – is reached, upset
pressure is applied and the
current circuit is opened.
This produces a thick flashfree
upset seam which is
typical for this method. In
order to guarantee the uniform
heating of the abutting
faces, they must be conformable
in their crosssectional
sizes and shapes
with each other and they
must have parallel faces.